Xu, Xiaohan
Ruan, Xia
Yu, Chunhua
Yu, Xuerong
Quan, Xiang
Li, Xu
Yuan, Tangmi
Xia, Di
Zhang, Yuelun
Pei, Lijian
Article History
Received: 1 September 2023
Accepted: 9 May 2024
First Online: 17 May 2024
Declarations
:
: The institutional review board of Peking Union Medical College Hospital reviewed our study protocol (I-23ZM0011) and classified our study as "exempt" because this study utilized legally obtained existing anonymous data, did not interfere with public behavior, did not cause harm to the human body, did not involve sensitive information, and did not touch upon commercial interests. The requirement of written informed consent was also waived by the institutional review board.
: Not applicable.
: The authors declare no competing interests.